Question

36 years hence the age of a man will be square of what he was 36 years ago. Find his present age.

Answer 1

Answer:

45

Step-by-step explanation:

36 years (ago) plus 36 years (hence) = 72 yearsThe nearest square larger than 72 is 81 (9x9)! So 81 - 72 = 9 Therefore he was 9 years old 36 years ago!9 plus 36 years makes his presentage 45 years old!!!

Answer 2

Answer:

45

Step-by-step explanation:

Let man's present age = x

His age after 36 years = x + 36

His age 36 years ago = x - 36

According to question ,

x + 36 = ( x - 36 ) ^2

x + 36 = x^2 + 1296 - 72x

x^2 - 73x +1260= 0

x^2 - 45x - 28x + 1260 = 0

x ( x - 45 ) - 28 ( x - 45 ) = 0

( x - 28 ) ( x - 45 ) = 0

x = 28,45

But x can't be 28 as his age 36 years ago would be negative which is not possible

Therefore , man's age = 45